Investment Boost and asset finance — the 20% deduction, and how funding the gear changes it

Since 22 May 2025, a New Zealand business buying a new asset can deduct 20% of its cost immediately, then depreciate the remaining 80% under the usual rules. It's called Investment Boost, and the part most coverage skips is that it isn't extra money — Inland Revenue is direct that it "does not change the total value of deductions you claim over the life of an asset," only when you get them. Financing the purchase changes this picture too: a hire purchase buyer is treated the same as an owner for this purpose, but an operating lease usually leaves the benefit with the lessor, not you.

Key Takeaways

What Investment Boost actually is

Inland Revenue's own description is straightforward: "From 22 May 2025, businesses can claim 20% of the cost of new assets as an expense, then claim depreciation as usual on the remaining 80%." It's framed as a way to "accelerate the depreciation of their assets" — and critically, you're not choosing between the 20% deduction and ordinary depreciation. You get both, in the same year: "you can claim both Investment Boost and a standard depreciation deduction in the year you purchase the asset."

The mechanic works by reducing the depreciation base itself. In year one, you claim 20% of the cost outright, plus the usual depreciation deduction — but calculated as if the asset's cost were 20% lower than it actually was. A simple version of this from Inland Revenue's own guidance: buy a new asset for $10,000 on 23 May 2025, and the Investment Boost amount — $2,000, or 20% — gets entered as depreciation in the tax depreciation box on your return.

What actually qualifies

Investment Boost applies to "most assets that are depreciable for tax purposes" — Inland Revenue's own examples are machinery, equipment and work vehicles. There's a genuine exception worth knowing: new commercial and industrial buildings qualify for Investment Boost even though buildings normally don't get standard depreciation deductions at all.

To qualify at all, an asset has to meet three conditions: it must be new, or new to New Zealand (even if it was used overseas previously), it must have been first available for use on or after 22 May 2025, and it must be depreciable for tax purposes. There's no dollar cap — Investment Boost can be claimed on an eligible asset of any value, however large.

On the residential building exclusion specifically, there are named carve-outs worth knowing: hotels, hospitals and rest homes remain eligible despite housing people, because the exclusion is aimed at ordinary residential accommodation, not those categories.

What doesn't qualify — and where the line genuinely sits

Investment Boost cannot be claimed on second-hand assets sourced from New Zealand, on residential rental buildings, on most fixed-life intangible assets such as patents, or on land, trading stock, and assets already fully expensed under other rules.

The second-hand exclusion is narrower than it first sounds, and this distinction matters. It's specifically second-hand assets sourced from within New Zealand that miss out — "new and secondhand assets that have been imported from overseas may be eligible for Investment Boost if they have not been used before in New Zealand." An imported second-hand piece of equipment that's never touched New Zealand soil before can still qualify; the same item bought second-hand from another New Zealand business cannot.

Minor prior use doesn't disqualify an asset either. Inland Revenue's own example is direct: "a single demonstration of a lawnmower while it's being held for sale is not 'use' of that lawnmower." Incidental use to get something ready for sale doesn't tip an asset into second-hand territory.

The date that actually decides eligibility

"Available for use" is a legal and physical test, not simply a matter of physical completion — and it's a genuine trap. Inland Revenue's own example involves a runway extension that finished physically before its certification came through: the asset "first became available for use on 30 May 2025, the date the certification was issued (not the date the work was finished)." Legal capability to use the asset, not just its physical state, decides the date.

This cuts the other way too, and it's the sharper trap: an asset that became available for use before 22 May 2025 gets nothing, even if the business genuinely didn't start using it until afterward. Inland Revenue's own example states this outright for a function centre that missed out entirely because it was available for use before the cutoff date, regardless of when it was actually put into service.

There is one real escape hatch worth knowing. If Inland Revenue later reassesses a prior return — recharacterising, say, a repair that was originally treated as revenue expenditure as capital in nature instead — the business can retroactively claim Investment Boost on that reassessed amount, even though the original claim never touched it.

What you must do once you've claimed it — and what's optional

Once you claim Investment Boost on a depreciable asset, you must depreciate it — you can't then elect that asset as non-depreciable. Investment Boost itself is optional, though: a business can simply choose to depreciate an asset under the standard rules and skip Investment Boost altogether if that suits its situation better.

Two worked examples, straight from Inland Revenue

A restaurant buying a $2,500 deep fryer claims 20% — $500 — as an immediate deduction, then depreciates the remaining $2,000 as if that were the full cost of the asset.

A taxi business buying a $45,000 car, found to be 50% business use and 50% private use, claims half of the Investment Boost amount — $4,500 — as a deduction, and depreciates the remaining 80% of the full cost ($36,000) as if that amount were 100% of the cost.

Mixed-use assets — two different published methods

Worth flagging directly, because the numbers genuinely diverge. Inland Revenue's own taxi example applies the 20% Investment Boost rate to the full cost of the asset first, then applies the business-use fraction to that resulting deduction. A separately published worked example, from Prospa, takes a different order entirely: it applies the business-use fraction to the asset's cost first — for example, $45,000 at 60% business use gives a $27,000 business-use base — then takes 20% of that already-reduced figure for the immediate deduction, and depreciates 80% of the reduced figure rather than the full cost.

These are two different orders of operations, and they can land on different numbers for the same underlying asset and business-use split. Follow Inland Revenue's own methodology directly, or confirm the exact calculation with your accountant before filing — particularly on a higher-value mixed-use asset, where the gap between the two approaches would be meaningful rather than trivial.

Timing benefit, not free money

This is the core of what the marketing around Investment Boost tends to skip. Inland Revenue states it outright: "Investment Boost is a form of accelerated depreciation. It does not change the total value of deductions you claim over the life of an asset." The actual benefit is a timing advantage: "earlier deductions lower the present value of the tax paid and mean better cashflows for your business."

Inland Revenue's own worked figures show exactly how small that timing gain actually is in present-value terms, once you strip out the headline first-year number. Take a $100,000 asset, depreciated straight-line at 20%. Without Investment Boost: $20,000 a year for five years. With Investment Boost: $36,000 in the purchase year, then $16,000 in each of the following years — and after four years, the total deducted is identical, $100,000 either way. Nothing extra has been claimed; the same deductions have simply arrived in a different order.

Quantified at a 4% discount rate, Inland Revenue puts the present value of that deduction stream at $92,598 without Investment Boost, versus $94,078 with it — a gap of under $1,500 on a $100,000 asset. That gap, not the $36,000 headline figure, is the entire real benefit. A first-year deduction that looks dramatically larger is not the same thing as a larger total benefit, and the two are easy to conflate if you only look at year one.

The clawback nobody mentions

Claiming Investment Boost lowers an asset's adjusted tax value, and that has a direct consequence if you sell the asset before it's fully depreciated. Inland Revenue's own example shows the gap plainly: the same asset carries an adjusted tax value of $40,000 without Investment Boost, versus $32,000 with it. Sell above that lower adjusted tax value, and more of the sale proceeds get treated as taxable depreciation recovery income than they would have without claiming Investment Boost in the first place.

This matters directly for anyone financing equipment they might trade in or upgrade early. An asset bought on finance and sold or traded before its term is up carries a genuinely bigger tax recovery bill once Investment Boost has been claimed against it — a cost the "claim your 20% now" framing doesn't mention.

How financing the asset changes this — and how it doesn't

This is the part worth understanding properly before you commit to a funding structure. Depreciation deductions on capital assets are available to a business whether it owns the asset outright, leases it, or buys it under a hire purchase agreement — that's the general rule Inland Revenue applies to depreciation across the board. Because Investment Boost sits directly on top of the standard depreciation mechanism, rather than being a separate, standalone deduction, the same logic carries through: whoever is entitled to depreciate the asset is the one positioned to claim Investment Boost on it too.

For hire purchase, that's genuinely good news. A hire purchase buyer is treated the same as an owner for depreciation purposes, even though legal title doesn't fully pass until the final payment. Financing the purchase this way changes your cash outlay and your repayment schedule — it does not change who gets to claim the deduction. The business using and depreciating the asset claims Investment Boost, exactly as it would if it had paid cash.

An operating lease is a different position entirely, and this is where the funding structure genuinely matters. An operating lease is built so the lessor retains ownership of the asset for the whole term — and depreciation, and therefore Investment Boost, sits with whoever owns and is entitled to depreciate the asset, not necessarily whoever is using it day to day. Before assuming your business will see the Investment Boost benefit on a leased asset, confirm directly with the lessor or financier which party actually owns it for tax purposes. On a genuine operating lease, that's very commonly the lessor, not you — which means the 20% deduction you were counting on in your cash flow forecast may never land on your own return at all.

If the Investment Boost deduction genuinely matters to your cash position this year, that's a real, specific reason to weigh hire purchase against an operating lease on more than just the headline rate or repayment structure — the tax treatment of the two isn't the same, and assuming otherwise is exactly the kind of thing that shows up as an unwelcome surprise at year end.

A few other things worth knowing

Investment Boost can only be claimed on the business-use portion of an asset — the private-use portion gets nothing, which is exactly what drove the halved deduction in the taxi example above. Separately, Investment Boost expenditure is also eligible expenditure for the research and development tax credit, worth knowing if your business is claiming both.

Frequently Asked Questions

Does Investment Boost mean I get more total deductions over the life of the asset? No. Inland Revenue is explicit that it changes the timing of deductions, not the total — the worked $100,000 example shows the same $100,000 claimed either way, just arriving faster with Investment Boost.

If I buy the asset on hire purchase, do I still get Investment Boost? Yes. Hire purchase buyers are treated the same as owners for depreciation purposes, and Investment Boost rides directly on that entitlement — financing the purchase this way doesn't change who claims the deduction.

What if I lease the equipment instead of buying it? It depends entirely on who owns the asset for tax purposes. On a genuine operating lease, that's typically the lessor, not you — confirm this directly before assuming the 20% deduction will land on your own return.

Can I claim Investment Boost on a second-hand asset? Only if it's never been used in New Zealand before — a second-hand asset imported from overseas can qualify, but the same item bought second-hand from within New Zealand cannot.

What happens if I sell the asset before it's fully depreciated? Claiming Investment Boost lowers the asset's adjusted tax value, which means you can face a larger depreciation recovery bill on an early sale than if you'd never claimed it — worth factoring in specifically if you're financing equipment you're likely to trade or upgrade before its term is up.

Deplexifi arranges asset and equipment finance across New Zealand, Australia and the UK, and can tell you which funding structure actually puts the Investment Boost deduction on your own return before you sign anything.

Assuming an operating lease gives you the same Investment Boost benefit as buying outright or on hire purchase. Ownership drives who claims the deduction, and a genuine operating lease usually leaves that with the lessor, not you.

Nothing here is regulated financial advice. Deplexifi arranges commercial finance for businesses — this article describes general lending practice and the published position of the sources listed below, not a recommendation for any individual business.